Well, if you're setting up 1000 full nodes then you're doing a lot to help the network, so I'd say you'd deserve a good chunk of donations (we're not trying to force anyone to donate, just allow anyone to prove that a full node is associated with a specific address). Remember that 1000 full nodes requires (currently) 20 TB of hard drive space, plus probably several terabit per second of bandwidth, maybe even a petabit, plus 1000 rounds of checking each new block and each transaction.

If the system that proves you're running a full node allows you to claim the same node several times, it's not a good proof system. That's exactly what someone trying to make such a system would have to solve (and why such a system hasn't been made yet).